He wore round glasses held together with a lot of Sellotape because of all the times Dudley had punched him on the nose (PS2).
Harry, who spent a sleepless night imagining school the next day, where he was already laughed at for his baggy clothes and Sellotaped glasses (PS2)
Cellophane tape. In the U.S., we’d say “Scotch tape”. The name of the wizarding equivalent, Spellotape, is a play on this, a pun that is lost in translation for U.S. readers.